00945cam a22002771 4500 gs 60000221 DLC 20260227111409.0 790411s1960 mtua 000 0 eng c gs 60000221 (OCoLC)4847374 U.S. Geol. Survey TxEU DLC premarc TN872.M9 P43 1960 Perry, Eugene S. (Eugene Sheridan), 1892- Oil and gas in Montana. Revision of 1959. Butte, Montana school of mines, 1960. iv, 86 p. maps (1 fold. col.) diagrs., tables, 28 cm. Montana Bureau of Mines and Geology. Bulletin 15 Part of illustrative matter in pocket. "Complete revision of a previous report issued as Memoir 35 in 1953." Bibliography: p. 85-86. Oil fields Montana. Natural gas Montana. Geology Montana. 29457 29457